↑Thomas Kuhn (Stanford Encyclopedia of Philosophy): "Not all the achievements of the preceding period of normal science are preserved in a revolution, and indeed a later period of science may find itself without an explanation for a phenomenon that in an earlier period was held to be successfully explained. This feature of scientific revolutions has become known as 'Kuhn-loss'".

↑Aviezer Tucker (ed.), A Companion to the Philosophy of History and Historiography, Blackwell Publishing, 2011 : "Analytic Realism".